Altar of Dementia + Fain, the Broker + Intruder Alarm + Pitiless Plunderer

UB identity

Commander legal

The 4 combo pieces

What must be in place

Fain does not have summoning sickness.
You control at least one additional artifact.

How to execute it

  1. Activate Fain's third ability by tapping it and sacrificing another artifact, creating a 2/1 Inkling creature token.
  2. When the Inkling enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  3. Activate Altar of Dementia by sacrificing the Inkling.
  4. When the Inkling dies, Pitiless Plunderer triggers, creating a Treasure token.
  5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the Inkling's power.
  6. Repeat.

What the combo produces